A BIOMETRIC STUDY OF 4 POPULATIONS OF THE BLEAK (ALBURNUS-ALBURNUS) FROM THE CZECH-REPUBLIC

Comparative analysis of the biometry of four bleak populations under t he influence of different water ecosystems in the Czech Republic is pr esented. Analysis revealed significant differences between compared po pulations in 22 of 29 plastic variables. Ten variables displayed sexua l dimorphism. For discriminant analysis, we used the nine characters w ith the highest discriminating capacity. Re-evaluation according to th e particular localities classified correctly 92 % of males, and 98 % o f females, respectively. The present study demonstrates through discri minant multivariate analysis that classical taxonomic studies in biome try may provide many possibilities for identifying the local strains o f fish species or subspecies. These conclusion on bleak are briefly di scussed.